Introduction to Java programming with Eclipse IDE
In this blog, I will show you how to create a simple Java code/program that will print “Hello World” using Eclipse IDE.
Per-requirements:
Download the latest Java version for your system — https://jdk.java.net/archive/
Configure the Windows environment variable once the Java is downloaded. If you are unaware of the process, check out the blog — Java environment variable configuration.
Download the Eclipse IDE zip file for your system and extract it — https://archive.eclipse.org/technology/epp/downloads/release/2021-06/R/
Introduction to Java programming:
Let us start creating a simple Java program to print “Hello World” in the console.
- Double-click on Eclipse and open it.
2. Provide your system path for the Eclipse workspace and click on ‘Launch’, all the programs which you are going to write will be stored here.
3. Once the Eclipse is opened, go to File → New → Java Project. It will open a window as below, give your project name and click on ‘Finish’.
Once the Java project is created, you will be able to see your project at the left top side of Eclipse as below.
4. Create the Package and Class.
Package: it is nothing but a collection of Classes.
Class: It’s nothing but a template/blueprint that contains variables, methods, and constrictors.
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Right-click on src → new → class
Give your Package name and Class name:
Here I gave the Package name “com.java.medium”, this will create 3 sub-directories inside src as com/java/medium.
And for the Class name, I gave it HelloWorld, this will create a file inside the medium directory with the filename HelloWorld.java
Once you click on the finish, it will create the below program.
package com.java.medium;
public class HelloWorld {
public static void main(String[] args) {
// TODO Auto-generated method stub
}
}- In this, the first line indicates the package and the second line is for class.
- And next is the Main method of this program.
5. Update the program with the print statement.
In Java, we will use the below statement to print lines.
System.out.println();So the updated script will be below.
package com.java.medium;
public class HelloWorld {
public static void main(String[] args) {
// TODO Auto-generated method stub
System.out.println("Hello World");
}
}Save the program and right-click → run as → Java application
It will give the output in the console as below.
This concludes the blog for Introduction to Java Code with Eclipse IDE. Please follow my blogs for more program-related blogs.
If you have any doubts, please let me know in the comment session below. Thank you.
